XCT data of metallic feedstock powder with pore size analysis

X-Ray computed tomography (XCT) scan of 11 individual metallic powder particles, made of (Mn,Fe)2(P,Si) alloy

The data set consists of 4 single XCT scans which have been stitched together [3] after reconstruction.
The powder material is an (Mn,Fe)2(P,Si) alloy with an average density of 6.4 g/cm³. The particle size range is about 100 - 150 µm with equivalent pore diameters up to 75 µm. The powder and the metallic alloy are described in detail in [1, 2].

Data acquisition

The data was acquired using a Zeiss Xradia 620 Versa X-ray microscope which provides the opportunity of optical magnification.

Tomographic imaging parameters

XCT system
Zeiss Xradia 620 Versa

Voltage
80
kV

Power
10
W

Source filtering
"LE2" (system specific)
-

Source-object distance
10
mm

Object-detector distance
10
mm

Geom. magnification
2
-

Optical magnification
20
-

Native pixel size
13.5
µm

Binning
2x2
px

Voxel size
0.68
µm

No. of projections per scan
801
1

No. of scans
4
-

Exposure time per projection
5
s

Projection data (801 single TIFF-files each):

proj_00

proj_01

proj_02

proj_03

Reconstructed data:

raw-volume (MnFePSi-Powder_80kV_10W_LE2_20x_5s_801_0p68_BHC=2_Stitch_U16_966x1020x2916.raw + header.txt)

analyzed data as Volume Graphics Studio MAX 3.4.5 project

Stitched 2D data (images stitched with ImageJ-Plugin described in [3]:

Stitched_0deg_Projections.tif

Pores+Particles_Analysis.tif

[1] G.-R. Jaenisch, U. Ewert, A. Waske, and A. Funk, “Radiographic Visibility Limit of Pores in Metal Powder for Additive Manufacturing,” Metals, vol. 10, no. 12, p. 1634, Dec. 2020. https://doi.org/10.3390/met10121634

[2] X. Miao et al., “Printing (Mn,Fe)2(P,Si) magnetocaloric alloys for magnetic refrigeration applications,” J. Mater. Sci., vol. 55, no. 15, pp. 6660–6668, May 2020. https://doi.org/10.1007/s10853-020-04488-8

[3] S. Preibisch, S. Saalfeld, and P. Tomancak, “Globally optimal stitching of tiled 3D microscopic image acquisitions,” Bioinformatics, vol. 25, no. 11, pp. 1463–1465, Jun. 2009.